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A heat pump utilising the shape memory effect

A heat pump system, memory alloy technology, applied in the heat pump field of heating system and/or cooling system, can solve problems such as low efficiency and buckling

Pending Publication Date: 2020-12-25
EXERGYN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system is also not very efficient and buckles during operation

Method used

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  • A heat pump utilising the shape memory effect
  • A heat pump utilising the shape memory effect
  • A heat pump utilising the shape memory effect

Examples

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Embodiment Construction

[0046] The present invention relates to a new heat pump cycle that utilizes latent heat from phase transformation of shape memory alloys ("SMA") or negative thermal expansion materials (NTE). The invention may use certain SMA motors consisting of multiple elements or wires packed together tightly to define a core. SMA materials can exist in two crystalline states, martensite and austenite, and can reversibly transform from one phase to the other. The austenite to martensite transformation of SMA is exothermic. The transformation of martensite to austenite is endothermic. The temperature at which the phase transition occurs can be controlled via applying stress to the SMA material.

[0047]A shape memory alloy (SMA) is an alloy that exhibits a shape memory effect and, once deformed, returns to its pre-deformed shape when heated. The material is a lightweight, solid-state alternative to traditional actuators such as hydraulics, pneumatics and motor-based systems.

[0048] Th...

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PUM

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Abstract

The invention provides a heat pump system and method comprising a Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) core (2a, 2b) positioned in a housing and adapted to absorb heat and store energy in response to a first fluid inputted at a first temperature. The housing is configured to receive a second fluid via an inlet wherein a device changes pressure in the housing to cause the SMA or NTE core to change state to release the heat absorbed into the second fluid. An outlet is adapted to output the second fluid at a higher temperature than the first temperature.

Description

technical field [0001] This disclosure relates to heat pumps. In particular, the present disclosure relates to heat pumps for heating and / or cooling systems, such as air conditioning systems. Background technique [0002] Heat pump ("HP") technology has gained wide commercial acceptance in heating, ventilation, and air conditioning ("HVAC") applications. These heat pump technologies can provide energy savings and emission reductions, and are often installed for heating and cooling systems in buildings or automotive applications, among others. [0003] There are several types of heat pumps. Most existing technologies utilize expansion / compression cycles, and many heat pumps are classified by heat source, eg, air source heat pumps or ground source heat pumps. The basic technology used in heat pumps is similar. Air source heat pumps have limited performance at low temperatures (at -18°C the CoP tends to be around 1 (due to the Carnot cycle), so resistive heating is more eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/00F03G7/06F25B23/00
CPCF03G7/065F25B23/00F25B30/00F03G7/0614F03G7/0646F03G7/062F25B29/006F25B30/04F25B37/00
Inventor M·兰根K·奥图尔
Owner EXERGYN
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